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How many metric tons of 7 %-S coal would be needed to yield the H2SO4 required to produce a 8.4 cm rainfall of pH 2.00 over a 100 km2 area?
When electrical current of unknown magnitude is run through the device for 3.50 min, 16.1 mL of water-saturated H_2(g) is collected. The temperature and pressure of the system are 25 degreesCelsius and 715 torr.
A solution is prepared by adding 50.0 ml of 0.050M HBr to 150.0 ml of 0.10M HI. Calculate the concentration of all species in this solution. HBr and HI are both considered strong acids.
The rate is measured at 300 K. To what temperature must the reaction be raised to double the rate? a) 310k b)333k c)353k d)363k e)373k f)412k
use an orbital interaction diagram to draw the molecular orbitals oh H2+. Do you predict that this molecule will be stable? Explain your logic.
the most common source of copper cu is the mineral chalcopyrite cufes2. how many kilograms of chalcopyrite must be
calculate the concentration of a monotropic basic solution given that 99.3ml of the basic solution is neutralized by
At a local convenience store, you purchase a cup of coffee, but ,at 98.40C, it is too hot to drink you add 23.0 g of ice that is -2.20 C to 248 ml of the coffee. What is the final temperature of the coffee
A 0.010 M solution of a weak monoprotic acid is 2.5% dissociated at 25* C. What is the equilibrium constant, Ka, for this acid
What are the mole fractions of ethanol, C2H5OH, and water in a solution prepared by mixing 55g of ethanol with 45g of water
Reaction of SbF5 with HF produces octahedral SbF6- and a free proton (which is the reason for the super acid character of this combination). What is the formal charge on the central Sb atom in SbF6
0.0850 M in pyridine, C5H5N, and 0.0560 M in pyridinium chloride, C5H5NHCl The Kb for pyradine is 1.7x10-9
If a second-period diatomic molecule has 5 electrons in its valence shell (total of 2s and 2p electrons), what is the predicted bond order of the molecule
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